Flask or jug liner



A. S. KNAPP FLASK 0R JUG LINERS l May 15, 1945.

Y Filed Aug. 11, 1942 Z/ Zd fo Af Patented May 15, 1945 y f `-llAndrevsfwS.w*Kliiappp St. Louis, Mo.; assgnor to` l f appj-MonarchfCompany, St. Louis, Mo., a

corporation of Missouri f l Avflaiifffeieiiil, Mesem Nof 4544356 slain, (c1. 21a-13),

The presentavano@ remat @une w, .et

con na ers, iandj more pzfi'rtic'fk larlyto containers of this' sni-'aled'isulated ty .wherein their@ walls are dis'ixrsetf1 in rated-:apart :rel'at'iniY to" each otheri'to 'fornii an"4 insu .ti gf, chamber f the'riepe-l In some instances, containers of this general typemerely utilize theqspace between the 4walls as an airhamberwher'ein the air confined between the vwallsl serves asV the insulating medium. Inother constructions, a suitable type of insulating material is introduced between the walls of the container."

The purpose of such constructions, asis wellv known, is to tend to minimizeA the` transmission ofjheat through the double walls of the container; Containers of this type'are'especially suitablefor useinconnection with temporarystoragej of liq'- uids, either hot or cold." Their use, however, eX- tends to other fields wherever it is desirable to tendto maintain the contents'of the container at a desired range of temperatures for several hours ordays.

one of the objects of tnisinvention is topi-t; vide a novel and improvedfcontainer construction Figi/ir i is a perspective .viewof the"` two plastic secticnsj comprising ',thejiriner lHaier-0f' the container embodylngffthel piesent invention and which, as shown, is the-fermof flask? ,v

` y FigureZ is a vertical section tl'irei'ig'hthe completed container;rj i li'gureBA is'a vertical Vsection through a jug'type container, embodying the present invention,y and l ,Figure [4 isi a fragmentary enlarged sectional View of the upperjendjoi the container, showing ainodi'ed form of retainingfmeans for securing the plastic `inner liner inxed'relation to the outer jacket ofthe container, 71;, f l The containerfr s illustrated Figures v1 and' 2 of the' drawing, is ciiflraskjtype and, as seemisj of smaller crossfsectional dimensir'is''at the lower endthereof as compared with the up'perendf 'The container includes an'uter Wall or jacket'l 0, preiera/.biy'ffomed ofjmetai; 'in tnecbnstruction' as illustrated in `Figure g2 of the drawing, the outer jacket, for 'convenience manufacture `and as# of the character indicated which is of relatively simple construction, eflicientin use, and which Ais capable ofwithstanding a substantial amount of lshock without breakage.

` Another object is to providean improved container o f the character indicated which is charac; terized bythe provision of' a liner ,or inner wall formed of plastic material which is Vdisposedwithin and in spaced-apart relation'to anvouter wall orjacket.`

A further object're'sides' inthe novel construction and arrangement of a'vcont'ainerbf the character indicated, by virtue of which'theinner liner of the`contain`er is xedly secured in desired l spaced relation to the outer jacketof the' conminer Still another objectis'tofprovide an improved container construction characterized .by the pro-A vision of an inner'` liner of Iplastic material formed with outwardly extending members forI engaging theV inner surface 'of 'theouter jacket fo;` maine` taining. the body of the inner liner. .in proper spaced-apart `relation to the outer jacket.

With these and other objectsin view, my invention consists yin the. construction, 4arrangement and combination of the various parts of my device whereby the objects contemplated are attained l as hereinafter more` fully setforth, pointed out in myclaimland illustrated in the accompanying' drawing', wherenf sembly, isv formed-of two sections'f indicated at l I and i 2, the `abuiiti'rig edges of which'are secured tog therby a folded 'crimpe'djoinn as indicated at "i 'he' liner for the container," as'indicat'ed at i5, is vfortified lof" suitable plastic material, andffor convenience 'injmanufacture said liner is formed off' aplural'ityof sections I6, vhereinindicated-'as two, which are substantially identical in form with the Aexception-of the threaded externald surface ofthe neclfjas'-hereiafter described; "The liner is of generally Voblongl formand thetwo halves are disposed-in labutting'relation and in tegrally united together'tdform a unitary article.

Depending'upon the czh'aracter of'pl'astic material employed, it may` be necessary, certain-instances, to utilizic'ertain types of adhesives for bonding the` sections together. Inthe use of other types of plastics, itfrnay be desired/to merelyuse a suitable solvent' for' coating'i the 'a''cuttingv edges of the liner sections' so'th'at, when placed together, the parts iny effect become a single element.

The outer marginaliede'e"Y ff each of the' plastic sections, including the'side'sithe upper end and bottoni',preferablyterminatein laterally extendingflane's TI"LTTheseflanges 'areofsuitable dimension" soV that when the liner receptacle is disposed 'witl'iin the outer jacket fill, saidv flanges engage the inner vsurface of the outer jacket and `thereby"space the fbody of the4 plastic liner in proper relation to theoutr jacket and thus provide' a cavityA orA chamber between thel liner 'Tand jgckety v. u 2

"" he upper end of thef'plastic l'liner terminates in an upstanding neck 20 which is externally threaded, as indicated at 20a, the neck being dimensioned to extend through an opening formed in the upper end of the outer jacket I0, and projects a substantial distance thereabove for receiving a screw-threaded cap or closure member 2| for sealing the upper end of the neck.

It will be apparent that the two sections I6 of the inner liner may in all respects be identical, with the exception of the threading on the exterior of the neck 2D. Obviously, the threaded portions of the respective sections must be cooperatively formed so that when the sectionsare connected together they form a continuous thread.

The flanges |1, at the upper end of the liner, converge into bosses 23 which, when the two sections are connected together, form in effect a collar or shoulder around the base of the neck.

When the inner liner is placed in position within the outer jacket I0, the top of the collar formed by the bosses 23 seats firmly against the under side of the outer jacekt |0, and the outer edges of the flanges I1 are disposed in contact with the inner surface of the outerjacket IB. space between the outer jacket and the body proper of the linerI is preferably filled with suitable insulating material, as indicated at 25.

To further insure proper positioning of the liner within the outer jacket, I provide a clamping nut 21, which is threaded onto the base portion of the neck of the liner for firmly gripping the portion of the outer jacket, immediately surrounding the opening through which the neck extends, firmly between the nut 21 and the collar formed by the bosses 23 of the liner.

By virtue of the construction above described, it will be apparent that the plastic inner liner, in addition to possessing various constructional advantages, also results'in providing a construction which is relatively substantial in thatit is capable of withstanding substantial shock without breaking. heretofore manufactured for this general purpose, a glass inner liner has usually been employed, and it is a well known fact that a sludden shock or blow to the container would frequently result in shattering of the glass inner liner.

Figure 3 represents an adaptation of my invention to a jug type of container which includes an outer jacket 30, preferably of sheet metal. The jacket is composed of a plurality of sections and preferably two in number, and which, as seen in the drawing, comprises a base portion 3| and an upper body portion 32, which parts are connected together by a folded crimped joint, as indicated at 33.

The inner liner, vindicated'at 35, is composed of two sections 36 and 31 joined together at a horizontal plane. The lower section 36 is of generally cup-shaped formation `and the abutting edges of the two sections terminate in laterally extending annularflanges 38, which are adapted to be integrally united together to form a unitary liner. TheV upper end of the upper section 31 terminates in a neck 40, adapted to extend through an opening formed in the upper end of the outer jacket 30. The outer surface of the neck is threaded for receiving an internallyl threaded cap or closure member 4|. Threaded onto the base portion of the neck is a clamping nut 43, which functions in the manner above described in connection with the structures shown The' In double walled receptacles as' in Figures 1 and 2, for firmly clamping the portion of the jacket, immediately surrounding the opening through which the neck 40 extends, between the nut 43 and a collar portion 44 formed at the base portion of the neck 45.

The lower portion of the side wall and the bottom of the liner 35 is formed with a plurality of spaced-apart projections 4B dimensioned for engaging, respectively, the inner surface of the side wall and bottom' wall of the outer jacket 30, for maintaining the inner liner 35 in proper spaced relation to the outer jacket t0 form a chamber therebetween. The chamber formed between the two walls is preferably lled with suitable insulating material, as indicated at 41.

The side wall of the lower portion 36 of the plastic liner, preferably adjacent the bottom, is provided with a tubular duct 49, adapted to extend laterally through an opening formed in the outer jacket 30.. It is to be understood that the outer end of the tubular duct may be provided with a suitable spigot or other type of closure for controlling the discharge of the liquid conv tents of the jug in lieu of pouring from the relatively large size cpening in the neck.

Figure 4 represents a modified form of retaining means for connecting the plastic inner liner a of the jug to the outer jacket, indicated at 30a. In this construction, the external surface of the base portion of the neck a s provided with an annular groove 50, and the upper end of the cuter jacket 30a terminates in an upstanding flange 5I, which is formed with a concavoconvex annular rib 53, adapted to be seated in the` annular groove of the neck. The flange 5| of the outer jacket is secured rmly in position around the neck 40a. of the plastic inner liner by means of a spring ring 54, which may be initially spread for insertion over the neck 40a and `flange 5| until it registers with the concave surface of the bead 53 of the neck flange 5| and then is permitted to snap into place. This arrangement provides a simple, sturdy and durable connection between the plastic inner liner and the cuter jacket, and tends to maintain the inner yliner in relatively fixed relation' to the` outer jacket.

This construction in some respects ispreferable to the clamping nut as disclosed in Figures 2 and 3 of the drawing, wherein there is a possibility of the nut causing stripping of the plastic threads at the base of the neck, during the clamping of the parts together.

Some changes may be made in the construction and arrangement of the parts of my device without departing from the real spirit ,and purpose of my invention, and it is my intention to cover by my claim any modied forms of structure or use of mechanical equivalents which may be reasonably included within their scope without sacrificing any of the advantages thereof.

I claim` as my invention:

In a double walled heat insulated container, an outer jacket, and an inner liner of plastic material disposed within and, in spaced apart relation to the outer jacket and having a threaded neck of less cross-sectional dimensions than the body thereof, said liner being formed of a plurality of sections having their abutting edges terminating in outwardly'extending flanges integrally united together to form a unitary liner, said flanges being dimensioned to engage the inner surface of the jacket to maintain the body of said liner in spaced relation to the jacket.

ANDREW S. KNAPP. 

